Associations of maternal personal exposure to air pollution on fetal weight and fetoplacental Doppler: A prospective cohort study

作者：Mariana Azevedo Carvalho, Lisandra Stein Bernardes, Karen Hettfleisch, Luciana Duzolina Manfré Pastro, Sandra Elisabete Vieira, Sílvia Regina Dias Médici Saldiva, Paulo Hilário Nascimento Saldiva, Rossana Pulcineli Vieira Francisco · 发表于：Reproductive Toxicology · 年份：2016 · DOI：10.1016/j.reprotox.2016.04.013 · 被引用次数：46 · 研究领域：Air Quality and Health Impacts、Climate Change and Health Impacts、Global Health Care Issues

We determined the influence of maternal air pollution exposure during each trimester of pregnancy on fetal and birth weight and fetoplacental hemodynamics. In total, 366 women with singleton pregnancies were prospectively followed in the city of São Paulo, Brazil. Nitrogen dioxide (NO2) and ozone (O3) were measured during each trimester using passive personal samplers. We evaluated fetal weight and Doppler velocimetry data from the umbilical, middle cerebral, and uterine arteries in the 3rd trimester, and birth weight. Multivariate analysis was performed, controlling for known determinants of fetal weight. Exposure to higher levels of O3 during the 2nd trimester was associated with higher umbilical artery pulsatility indices (PIs) [p=0.013; beta=0.017: standard error (SE)=0.007]. Exposure to higher levels of O3 during the 3rd trimester was associated with lower umbilical artery PIs (p=0.011; beta=-0.021; SE=0.008). Our results suggest that in the environment of São Paulo, O3 may affects placental vascular resistance.